Effects of CCA Treatment and Drying on Tensile Strength of Lumber
Publication: Journal of Materials in Civil Engineering
Volume 4, Issue 3
Abstract
Approximately 50% of the southern pine lumber produced in the United States is subsequently pressure treated with chromated copper arsenate (CCA) preservative. This report discusses the influence of initial kiln‐drying temperature, CCA preservative treatment, post‐treatment redrying temperature, and grade on the tensile properties of southern pine dimension lumber. Tensile strength was not significantly affected by initial kiln‐drying temperature, but it was reduced when CCA treatment was followed by high‐temperature redrying. When comparing No. 2 and better southern pine nominal 2‐ by 4‐in. (actual 38‐ by 89‐mm) lumber initially kiln dried at either 91 °C or 113 °C, a consistent reduction in tensile strength of 7–10% was noted when initial kiln drying at 113 °C was followed by CCA treatment and any level of redrying. This effect is consistent with previously reported results for bending strength.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 4 • Issue 3 • August 1992
Pages: 240 - 251
Copyright
Copyright © 1992 ASCE.
History
Published online: Aug 1, 1992
Published in print: Aug 1992
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